使用Redis存储SpringBoot项目中Session的详细步骤

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-redis")
    implementation("org.springframework.session:spring-session-data-redis")
}

spring:
  redis:
    host: localhost
    port: 6379
    password: ""
    lettuce:
      pool:
        max-active: 8
        max-idle: 8
        min-idle: 0

server:
  servlet:
    session:
      store-type: redis  # 使用Redis存储Session

spring.redis.host=localhost
spring.redis.port=6379
spring.redis.password=
spring.redis.lettuce.pool.max-active=8
spring.redis.lettuce.pool.max-idle=8
spring.redis.lettuce.pool.min-idle=0

server.servlet.session.store-type=redis  # 使用Redis存储Session

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@SpringBootApplication
@EnableRedisHttpSession
public class MyApplication {

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

redis-cli -h localhost -p 6379

KEYS spring:session:sessions:*

HGETALL spring:session:sessions:<session-id>

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Enumeration;

@RestController
public class SessionController {

    @Autowired
    private StringRedisTemplate redisTemplate;

    @GetMapping("/check-session")
    public String checkSession(HttpSession session) {
        String sessionId = session.getId();
        Enumeration<String> attributeNames = session.getAttributeNames();
        StringBuilder sessionData = new StringBuilder("Session ID: " + sessionId + "\n");

        while (attributeNames.hasMoreElements()) {
            String attributeName = attributeNames.nextElement();
            sessionData.append(attributeName).append(": ").append(session.getAttribute(attributeName)).append("\n");
        }

        // 在日志中输出Session ID和内容
        System.out.println(sessionData.toString());

        // 检查Redis中是否存在该Session ID
        Boolean hasKey = redisTemplate.hasKey("spring:session:sessions:" + sessionId);
        return hasKey != null && hasKey ? "Session stored in Redis" : "Session not found in Redis";
    }
}